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Jun 13, 2025
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feat: Add Debian-specific information to LVGL OOB docs #201

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1 change: 1 addition & 0 deletions configs/AM62LX/AM62LX_debian_toc.txt
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Expand Up @@ -7,3 +7,4 @@ debian/Building_Debian_Packages
debian/How_to_Guides/index_How_to_Guides
linux/How_to_Guides/Target/How_To_Enable_M2CC3301_in_linux
debian/Demo_User_Guides/index_Demos
linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide
2 changes: 1 addition & 1 deletion source/debian/Demo_User_Guides/index_Demos.rst
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Expand Up @@ -10,4 +10,4 @@ The default Debian image supports the following demo-applications
:maxdepth: 1

/debian/Demo_User_Guides/Chromium_Browser

/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide
2 changes: 2 additions & 0 deletions source/devices/AM62LX/debian/Getting_Started_Guide.rst
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Expand Up @@ -24,6 +24,8 @@ In addition to the EVM itself, the following hardware is needed:
6. USB mouse and Keyboard (For controlling the UI)
7. Ethernet cable (For network access)

.. _processor-sdk-debian-create-sd-card:

Create SD Card using balenaEtcher
---------------------------------

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152 changes: 99 additions & 53 deletions source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst
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Expand Up @@ -69,14 +69,31 @@
Launching the TI LVGL Demo
**************************

The demo will auto launch upon Linux booting on the EVM. Follow the below instructions to flash the SD card:
.. ifconfig:: CONFIG_sdk in ('SITARA')

1. Flash an SD card with the :file:`tisdk-default-image`. User can download the :file:`tisdk-default-image` wic image from |__SDK_DOWNLOAD_URL__|.
The demo will auto launch upon Linux booting on the EVM. Follow the below instructions to flash the SD card:

1. Flash an SD card with the :file:`tisdk-default-image`. User can download the :file:`tisdk-default-image` wic image from |__SDK_DOWNLOAD_URL__|.
Please follow the instructions from here to :ref:`Flash an SD card <processor-sdk-linux-create-sd-card>`.

2. Insert the flashed SD card to the board, connect the display, mouse/touch-input, ethernet cable, aux cable, jumper wire and power on the EVM.
2. Insert the flashed SD card to the board, connect the display, mouse/touch-input, ethernet cable, aux cable, jumper wire and power on the EVM.
The TI LVGL Demo will launch automatically when the device is fully booted.

.. ifconfig:: CONFIG_sdk in ('DebianSDK')

Upon booting the EVM, Weston is launched automatically. To launch the LVGL demo, refer the following
instructions:

1. Flash an SD card with the :file:`tisdk-debian-trixie` wic image. User can download the wic image from |__SDK_DOWNLOAD_URL__|.
Please follow the instructions from here to :ref:`Flash an SD card <processor-sdk-debian-create-sd-card>`.

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[RedHat.UserReplacedValues] Separate words by underscores in user-replaced values.

Raw Output:
{"message": "[RedHat.UserReplacedValues] Separate words by underscores in user-replaced values.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 88, "column": 71}}}, "severity": "INFO"}

2. Insert the flashed SD card to the board, connect the display, mouse/touch-input, ethernet cable, aux cable, jumper wire and power the EVM on.

3. Weston is launched on boot. Shut it down with `systemctl stop weston`.

4. Launch the demo by typing `/usr/bin/lvglsim` into the UART command prompt.


**********************
Using the TI LVGL Demo
**********************
Expand Down Expand Up @@ -176,87 +193,100 @@

.. note::

By default CC33xx is configured at boot, so here are the steps that can be followed to enable it:
By default CC33xx is configured at boot, so here are the steps that can be followed to enable it. If you are running as non-root user, run the following using `sudo`:

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[RedHat.Spelling] Verify the word 'sudo'. It is not in the American English spelling dictionary used by Vale.

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{"message": "[RedHat.Spelling] Verify the word 'sudo'. It is not in the American English spelling dictionary used by Vale.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 196, "column": 167}}}, "severity": "WARNING"}

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[RedHat.PassiveVoice] 'be followed' is passive voice. In general, use active voice. Consult the style guide for acceptable use of passive voice.

Raw Output:
{"message": "[RedHat.PassiveVoice] 'be followed' is passive voice. In general, use active voice. Consult the style guide for acceptable use of passive voice.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 196, "column": 79}}}, "severity": "INFO"}

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[vale] reported by reviewdog 🐶
[RedHat.PassiveVoice] 'is configured' is passive voice. In general, use active voice. Consult the style guide for acceptable use of passive voice.

Raw Output:
{"message": "[RedHat.PassiveVoice] 'is configured' is passive voice. In general, use active voice. Consult the style guide for acceptable use of passive voice.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 196, "column": 25}}}, "severity": "INFO"}

.. ifconfig:: CONFIG_sdk in ('SITARA')

.. code-block:: console

root@<machine>:~ systemctl stop ti-lvgl-demo
root@<machine>:~ cd /usr/share/cc33xx
root@<machine>:~ ./sta_start.sh
root@<machine>:~ ./sta_connect.sh -s WPA-PSK -n <SSID> -p <PASSWORD>
root@<machine>:~ udhcpc -i wlan0
root@<machine>:~ systemctl start ti-lvgl-demo

.. code-block:: console
.. ifconfig:: CONFIG_sdk in ('DebianSDK')

$ systemctl stop ti-lvgl-demo
$ cd /usr/share/cc33xx
$ ./sta_start.sh
$ ./sta_connect.sh -s WPA-PSK -n <SSID> -p <PASSWORD>
$ udhcpc -i wlan0
$ systemctl start ti-lvgl-demo
.. code-block:: console

root@<machine>:~ systemctl stop ti-lvgl-demo
root@<machine>:~ cd /usr/share/cc33xx
root@<machine>:~ bash ./sta_start.sh
root@<machine>:~ bash ./sta_connect.sh -s WPA-PSK -n <SSID> -p <PASSWORD>
root@<machine>:~ udhcpc -i wlan0
root@<machine>:~ systemctl start ti-lvgl-demo

For more details on how to enable CC33xx and connect to WiFi, visit :ref:`How to Enable M.2-CC33x1 in Linux <enable_m2cc3301>`

**The application includes the following widgets:**

*Widget#1: Climate Control*

.. note::
.. note::

This feature will work on platforms that have on-chip ADC. Following is supported on AM62Lx
This feature will work on platforms that have on-chip ADC. Following is supported on AM62Lx

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[RedHat.Definitions] Define acronyms and abbreviations (such as 'ADC') on first occurrence if they're likely to be unfamiliar.

Raw Output:
{"message": "[RedHat.Definitions] Define acronyms and abbreviations (such as 'ADC') on first occurrence if they're likely to be unfamiliar.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 228, "column": 58}}}, "severity": "INFO"}

- The indoor temperature in this widget displays the digital data obtained from ADC and display (data/10) on the widget.
- The outdoor temperature below the indoor temperature shows the value of (data/10)-6.5, if it is positive, else, shows zero.
- The indoor temperature is sent over SSL-encrypted MQTT messages under the topic `SmartHome/temp`
- This demo uses channel 0 for ADC input. To change the channel being used, modify the following in
- The indoor temperature in this widget displays the digital data obtained from ADC and display (data/10) on the widget.

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[vale] reported by reviewdog 🐶
[RedHat.Definitions] Define acronyms and abbreviations (such as 'ADC') on first occurrence if they're likely to be unfamiliar.

Raw Output:
{"message": "[RedHat.Definitions] Define acronyms and abbreviations (such as 'ADC') on first occurrence if they're likely to be unfamiliar.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 230, "column": 81}}}, "severity": "INFO"}
- The outdoor temperature below the indoor temperature shows the value of (data/10)-6.5, if it is positive, else, shows zero.
- The indoor temperature is sent over SSL-encrypted MQTT messages under the topic `SmartHome/temp`

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[vale] reported by reviewdog 🐶
[RedHat.Definitions] Define acronyms and abbreviations (such as 'MQTT') on first occurrence if they're likely to be unfamiliar.

Raw Output:
{"message": "[RedHat.Definitions] Define acronyms and abbreviations (such as 'MQTT') on first occurrence if they're likely to be unfamiliar.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 232, "column": 53}}}, "severity": "INFO"}

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[vale] reported by reviewdog 🐶
[RedHat.CaseSensitiveTerms] Use 'SSL/TLS' rather than 'SSL'.

Raw Output:
{"message": "[RedHat.CaseSensitiveTerms] Use 'SSL/TLS' rather than 'SSL'.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 232, "column": 39}}}, "severity": "WARNING"}

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[vale] reported by reviewdog 🐶
[RedHat.PassiveVoice] 'is sent' is passive voice. In general, use active voice. Consult the style guide for acceptable use of passive voice.

Raw Output:
{"message": "[RedHat.PassiveVoice] 'is sent' is passive voice. In general, use active voice. Consult the style guide for acceptable use of passive voice.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 232, "column": 26}}}, "severity": "INFO"}
- This demo uses channel 0 for ADC input. To change the channel being used, modify the following in

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[vale] reported by reviewdog 🐶
[RedHat.Definitions] Define acronyms and abbreviations (such as 'ADC') on first occurrence if they're likely to be unfamiliar.

Raw Output:
{"message": "[RedHat.Definitions] Define acronyms and abbreviations (such as 'ADC') on first occurrence if they're likely to be unfamiliar.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 233, "column": 32}}}, "severity": "INFO"}
`ti-lvgl-demo/lv_port_linux/lvgl/demos/high_res/adc.c <https://github.com/TexasInstruments/ti-lvgl-demo.git/>`__

.. code-block:: c
.. code-block:: c

FILE *fp = popen("cat /sys/bus/iio/devices/iio\:device0/in_voltage0_raw", "r");
FILE *fp = popen("cat /sys/bus/iio/devices/iio\:device0/in_voltage0_raw", "r");

*Widget#2: Charging*

- The data shown in this widget is the same that is shown in the EV Charging HMI app.
- This percentage completion data is also sent over SSL-encrypted MQTT messages under the topic `SmartHome/evCharge`
- The data shown in this widget is the same that is shown in the EV Charging HMI app.
- This percentage completion data is also sent over SSL-encrypted MQTT messages under the topic `SmartHome/evCharge`

*Widget#3: Lock*

.. note::
.. note::

Lock screen feature has only been enabled on AM62L
Lock screen feature has only been enabled on AM62L

- Sliding the lock to the right will lock the screen (disable all screen input)
- To unlock, press the SW5: User Button on the TMDS62LEVM
- Sliding the lock to the right will lock the screen (disable all screen input)
- To unlock, press the SW5: User Button on the TMDS62LEVM

.. Image:: /images/ti-lvgl-demo-tmds62levm-usr-button.png
:height: 200
.. Image:: /images/ti-lvgl-demo-tmds62levm-usr-button.png
:height: 200

*Widget#4: Speaker*

- The play/pause button will play noise in the McASP device.
- Custom audio filecan also be played by making necessary changes as shown below in
`ti-lvgl-demo/lv_port_linux/lvgl/demos/high_res/audio.c <https://github.com/TexasInstruments/ti-lvgl-demo.git/>`__
- The play/pause button will play noise in the McASP device.
- Custom audio filecan also be played by making necessary changes as shown below in
`ti-lvgl-demo/lv_port_linux/lvgl/demos/high_res/audio.c <https://github.com/TexasInstruments/ti-lvgl-demo.git/>`__

.. code-block:: c
.. code-block:: c

/* Copy the audio file in the SD file system */
/* In audio_play() function in audio.c */
/* Copy the audio file in the SD file system */
/* In audio_play() function in audio.c */

//Modify the following as per the specification of the audio file
rate = 48000; //in Hz
channels = 1; //1: mono, 2:stereo
seconds = 1; //duration of audio
:
:
//Replace "/usr/share/sounds/alsa/Noise.wav" with the path of the audio file
char *filename_wav = "/usr/share/sounds/alsa/Noise.wav";
//Modify the following as per the specification of the audio file
rate = 48000; //in Hz
channels = 1; //1: mono, 2:stereo
seconds = 1; //duration of audio
:
:
//Replace "/usr/share/sounds/alsa/Noise.wav" with the path of the audio file
char *filename_wav = "/usr/share/sounds/alsa/Noise.wav";

- Volume can be controlled from the vertical slider on the right-side of the widget.
- Volume can also be set by sending values between 1 to 100 over MQTT topic `SmartHome/volume` from remote device over internet.
- Volume can be controlled from the vertical slider on the right-side of the widget.
- Volume can also be set by sending values between 1 to 100 over MQTT topic `SmartHome/volume` from remote device over internet.

*Widget#5: Main Light*

- The `Light temperature` slider will increase/decrease the User LED blinking frequency.
- The left-end of slider (0 K) toggles LED every 250ms and the right-end of slider (20000 K) toggles LED every 20ms.
- `Light temperature` can also be set by sending values between 0 to 20000 over MQTT topic `SmartHome/led` from remote device over internet.
- In HMI, the slider `Light temperature` is not associated with any functionality but can be programmed be user to perform any function.
- The `Light temperature` slider will increase/decrease the User LED blinking frequency.
- The left-end of slider (0 K) toggles LED every 250ms and the right-end of slider (20000 K) toggles LED every 20ms.
- `Light temperature` can also be set by sending values between 0 to 20000 over MQTT topic `SmartHome/led` from remote device over internet.
- In HMI, the slider `Light temperature` is not associated with any functionality but can be programmed be user to perform any function.

*Widget#6: Sensor Controls*

- The buttons/sliders in this widget are not associated with any functionality but can be programmed by the user to perform any function.
- The buttons/sliders in this widget are not associated with any functionality but can be programmed by the user to perform any function.

Launching the Smart Meter HMI
=============================
Expand Down Expand Up @@ -290,11 +320,27 @@
Building the TI LVGL Demo from Sources
**************************************

The TI LVGL Demo is enabled in :file:`tisdk-default-image` yocto filesystem for |__PART_FAMILY_DEVICE_NAMES__| by default. Note, that
the binary itself does not have asset images and slides built in it. :file:`tisdk-default-image` contains the required assets within
:file:`/usr/share/ti-lvgl-demo/*`. Place any additional assets here while making any modifications. Yocto recipe for
building this demo can be found at
`github: ti-lvgl-demo.bb <https://github.com/TexasInstruments/meta-tisdk/blob/scarthgap/recipes-demos/ti-lvgl-demo/ti-lvgl-demo.bb>`__
.. ifconfig:: CONFIG_sdk in ('SITARA')

The TI LVGL Demo is enabled in :file:`tisdk-default-image` yocto filesystem for |__PART_FAMILY_DEVICE_NAMES__| by default.

.. ifconfig:: CONFIG_sdk in ('DebianSDK')

The TI LVGL Demo is packaged in :file:`tisdk-debian-trixie` wic image for |__PART_FAMILY_DEVICE_NAMES__| by default.

Note, that the binary itself does not have asset images and slides built in it.

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[vale] reported by reviewdog 🐶
[RedHat.TermsErrors] Use 'built-in' rather than 'built in'.

Raw Output:
{"message": "[RedHat.TermsErrors] Use 'built-in' rather than 'built in'.", "location": {"path": "source/linux/Demo_User_Guides/TI_LVGL_Demo_User_Guide.rst", "range": {"start": {"line": 331, "column": 68}}}, "severity": "ERROR"}
The image contains the required assets within :file:`/usr/share/ti-lvgl-demo/`. Place any additional
assets here while making any modifications.

.. ifconfig:: CONFIG_sdk in ('SITARA')

Yocto recipe for building this demo can be found at
`github: ti-lvgl-demo.bb <https://github.com/TexasInstruments/meta-tisdk/blob/scarthgap/recipes-demos/ti-lvgl-demo/ti-lvgl-demo.bb>`__

.. ifconfig:: CONFIG_sdk in ('DebianSDK')

Debian package for building this demo can be found at
`github: ti-lvgl-demo debian package <https://github.com/TexasInstruments/debian-repos/blob/master/ti-lvgl-demo/suite/trixie/debian/>`__

The source code is available at `TI LVGL Demo <https://github.com/TexasInstruments/ti-lvgl-demo.git/>`__ and can be re-compiled with the
following steps:
Expand Down
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